Apparatuses and methods are disclosed herein for implementing dormant mode with paging in a WLAN. Power savings in the computing device and reduction in traffic across the network are achieved by requiring a computing device to inform the WLAN of its location only when it crosses a paging area boundary or is to receive IP traffic. Dormant mode with paging is implemented in a protocol that supports dormant functionality and paging functionality but does not itself provide methods or standards for implementing such functionality, such as the IEEE 802.11. The methods and apparatuses disclosed herein provide the methods needed to implement dormant mode with paging in such a protocol. Generally, the methods and apparatuses for implementing dormant mode with paging basically include (1) establishing paging areas; (2) communicating access group information to a computing device; and (3) locating a computing device.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A method for establishing a plurality of paging areas in a WLAN, wherein the WLAN comprises a plurality of access points, comprising: forming a plurality of access point groups, wherein each of the plurality of access point groups is formed from a subset of the plurality of access points that is organized as a tree structure, and each access point group defining a paging area having a unique paging area identification number that is broadcasted by each access point in the access group throughout the access point group; establishing a protocol for communications among the plurality of access points; and adding operations to the protocol for manipulating the tree structure of each access point group, wherein the operations comprise a first access point sending a request to a second access point to cause the second access point to change a list that includes all of slave access points associated with the second access point.
2. A method for establishing a plurality of paging areas in a WLAN, as claimed in claim 1 , wherein forming the plurality of access point groups comprises the steps of: assigning at least one role to each of the access points in the access point group, wherein the roles comprise master and slave; and associating each access point assigned the master role with at least one access point assigned the slave role and associating each access point assigned the slave role with exactly one access point assigned the master role.
3. A method for establishing a plurality of paging areas in a WLAN, as claimed in claim 1 , wherein the protocol established for communications among the plurality of access points is an IEEE Inter Access Point Protocol.
4. A method for establishing a plurality of paging areas in a WLAN, as claimed in claim 1 , wherein establishing a protocol for manipulating access point groups comprises modifying and providing an IEEE Inter Access Point Protocol.
5. A method for establishing a plurality of paging areas in a WLAN, as claimed in claim 4 , wherein modifying the IEEE Inter Access Point Protocol comprises adding a join operation, a leave operation, a group merge operation, a group prune operation and a devolution operation.
6. A method for establishing a plurality of paging areas in a WLAN, as claimed in claim 1 , wherein each access point group comprises exactly one root access point, the root access point associated with one or more slave access points, the operations for manipulating the tree structure comprising a devolution operation, in which the root access point delegates each of its slave access points as a new root access point for a new access point group.
7. A method for establishing a plurality of paging areas in a WLAN, as claimed in claim 1 , wherein each access point group comprises exactly one root access point, the root access point maintaining a list of all the access points in the access point group to which the root access point belongs.
8. A method for establishing a plurality of paging areas in a WLAN, as claimed in claim 1 , wherein each access point group comprises one or more master access points, each master access point maintaining a list of all the access points that depend from the master access point.
9. A method for establishing a plurality of paging areas in a WLAN, wherein the WLAN enables dormant mode with paging and comprises a plurality of access points, comprising: forming a plurality of access point groups, wherein each of the plurality of access point groups is formed from a subset of the plurality of access points, has a tree structured distributed grouping model as the structure, and defines a paging area, comprising: assigning at least one role to each of the access points in the access point group, wherein the roles comprise master and slave; and associating each access point assigned the master role with at least one access point assigned the slave role and associating each access point assigned the slave role with exactly one access point assigned the master role; the protocol established for communications among the plurality of access points is an IEEE Inter Access Point-Protocol; establishing a protocol for manipulating access point groups comprises modifying the IEEE Inter Access Point Protocol by adding a join operation, a leave operation, a group merge operation, a group prune operation and a devolution operation; assigning each of the plurality of access point groups a unique paging area identification number; and having each of the access points in each of the plurality of access point groups broadcast the paging area identification number associated with each access point's access point group throughout each access point's access point group.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 19, 2006
October 27, 2009
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